[PATCH net-next v6 3/6] net: bcmasp: Add support for ASP2.0 Ethernet controller

[Justin Chen]

On 6/6/2023 5:16 PM, Jakub Kicinski wrote:
> On Tue, 6 Jun 2023 15:58:21 -0700 Justin Chen wrote:
>> On 6/2/23 11:58 PM, Jakub Kicinski wrote:
>>> On Thu,  1 Jun 2023 15:12:28 -0700 Justin Chen wrote:
>>>> +	/* general stats */
>>>> +	STAT_NETDEV(rx_packets),
>>>> +	STAT_NETDEV(tx_packets),
>>>> +	STAT_NETDEV(rx_bytes),
>>>> +	STAT_NETDEV(tx_bytes),
>>>> +	STAT_NETDEV(rx_errors),
>>>> +	STAT_NETDEV(tx_errors),
>>>> +	STAT_NETDEV(rx_dropped),
>>>> +	STAT_NETDEV(tx_dropped),
>>>> +	STAT_NETDEV(multicast),
>>>
>>> please don't report standard interface stats in ethtool -S
>>>    
>>
>> These are not netdev statistics but MAC block counters. Guess it is not
>> clear with the naming here, will fix this. We have a use case where the
>> MAC traffic may be redirected from the associated net dev, so the
>> counters may not be the same.
> 
> You seem to be dumping straight from the stats member of struct
> net_device:
> 
> +		if (s->type == BCMASP_STAT_NETDEV)
> +			p = (char *)&dev->stats;
> 
> No?
> 

Woops I got it mixed up. Yes these stats are redundant. What I was 
describing is
+	STAT_BCMASP_MIB_RX("rx_pkts", mib.rx.pkt),
and equivalent.

> Also - can you describe how you can have multiple netdevs for
> the same MAC?

Not netdevs per se, but packets can be redirected to an offload 
co-processor.
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